He says this is his second musical theatre show, having been in Dancing in the Street at Casa Blanca Theatre in 2013.
Desian says he is feeling anxious about show time starting this weekend.
He is looking forward to applying what he has been rehearsing.
Playing Curtis has also been a challenge because the character is a bit of a mean person, which Desian says is not like his own personality.
"It's been interesting trying to channel my inner bad guy."
He encourages people to check out the show because it features a lot of great talent, all on one stage.
"The talent in this show blows me away. Everyone will be on a roller coaster of emotions.
"It will just be a fantastic show."
Tickets for Dreamgirls are available at www.ticketmaster.co.nz.